Adjustable and collapsible pier mold



April 22, 1958 E. c. TOENSING 2,331,231

ADJUSTABLE AND COLLAPSIBLE PIER MOLD Filed May 17. 1955 Erwin 6.Toensing INVENTOR.

United States Patent ADJUSTABLE AND COLLAPSIBLE PIER MOLD Erwin C.Toensing, Albuquerque, N. Mex. Application May 17, 1955, Serial No.508,862

3 Claims. (01. 25-118) The present invention relates to new and usefulimprovements in molds for use in pouring concrete piers or columns usedin building construction.

An important object of the invention is to provide a sectional tubularmold adapted for supporting a beam or girder thereon at a desired heightand having adjustable telescoping connecting sleeves at the meeting endsof the sections of the mold for adjusting the sections vertically withina limited range to level the beam or girder before pouring the concrete.

Another object is to provide novel clamping means for easily and quicklysecuring the mold sections and the connecting sleeves in assembledrelation.

A further object is to provide a device of this character of simple andpractical construction, which is strong and durable, relativelyinexpensive to manufacture and otherwise well adapted for the purposefor which the same is intended.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view showing the mold in erected position;

Figure 2 is an enlarged transverse sectional view taken on a line 2-2 ofFigure 1;

Figure 3 is a fragmentary enlarged transverse sectional view of amodified cross-sectional shape of the mold; and

Figure 4 is an enlarged fragmentary transverse sectional viewillustrating a modified clamping device for the connecting sleeve.

Referring now to the drawing in detail, the numeral 5 in Figure 1designates the assembled pier or column mold generally and which isconstructed of a predetermined number of semicylindrical metal sections6 and 7 having outwardly projecting abutting flanges 8 and 9 at theirvertical meeting edges, and when secured to each other, thesemicylindrical mold sections 6 and 7 form a tubular cylindrical moldsection 10.

The mold sections 10 are secured to each other in end-to-end verticalposition by means of connecting sleeves designated generally at 11 andwhich are constructed of semicylindrical sections 12 and 13 positionedin telescoping overlapping relation with respect to the adjacent ends ofthe sections 10 and the meeting vertical edges of the sleeve sections 12and 13 are also formed with outwardly projecting flanges 14 and 15positioned in confronting relation at the outer surfaces of the flanges8 and 9 to clamp the flanges 8 and 9 therebetween.

The flanges 14 and 15 at one side of the sleeve 11 are connected to eachother by a conventional hinge structure 15 for swinging the sections ofthe sleeve inwardly I 12,831,231 Patented Apr. 22, 1958 and outwardlywith respect to the mold, as shown by dotted lines in Figure 2.

The free end portions of the sleeve sections 12 and 13 are secured inclosed position on the mold by means of a C-clamp 17 which is pivoted atone end to the sleeve section 12 by a conventional hinge structure 18and a clamping screw 19 is threaded into the other end and 22 in which abeam or girder 23 may be placed to rest on top of the mold. The notchesare preferably formed at the vertical meeting edges of thesemicylindrical sections of the mold.

The mold sections 10 are assembled and erected and supported in aperpendicular position by means of guy wires (not shown) attached tooutwardly projecting eyes 24 on the connecting sleeves 11. The beam orgirder 23 is then placed in the notches 21 and 22 of the uppermost moldsection 20 and either or both the lower mold sections 10 or the uppermold section 20 adjusted vertically in the respective sleeves to levelthe beam or girder 23. Concrete is then poured in the upper end of themold to the level of the top of the upper mold section 20 and it thuspartly embeds the beam or girder 23 therein. After the concrete has set,the clamps 17 are released and the mold sections and sleeves may beseparated and removed from the pier or column just constructed.

Figure 3 illustrates a modified mold construction wherein the moldsections 25 and 26 and the connecting sleeve sections 27 and 28 are ofsquare cross-sectional shape and it will be understood the mold may bealso constructed of hexagonal or other cross-sectional shape.

In Figure 4, I have illustrated a modified clamp con struction for themeeting vertical edges of the clamping sleeve sections 29 and 30 and inwhich a lever 31 is pivoted to the free end of a C-clamp 32 at a pointeccentric to the axis of a flat cam head 33 on the inner end of thelever and which bears against an adjacent flange 34 on the sleeve totighten the sleeve sections by swinging the lever inwardly.

A stop lug 35 is provided on flange 34 in the path of locking movementof the cam head 33 to limit inward swinging movement of the lever towardthe sleeve to maintain the lever spaced from the sleeve for gripping thelever to release the cam. The stop is positioned with respect to thepivot for the lever to permit move-- ment of the cam head into aself-locking position.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed. 7

What is claimed as new is as follows:

1. A mold of the class described comprising a plurality of hollow moldsections open at their top and bottom portions and adapted for erectingin superposed revlation with respect to each other, each of said moldsecedge portions at said opposite sides of said separable members, aband telescopically fitted in overlapping relation at the meeting endsof the mold sections, said band comprising. a pair of hingedly connectedsections, flanges at the hinged portion of said band" sectionspositioned. in confronting engaging and clamping relation to adjacentflanges on the mold members at one side thereof, flanges at the freeends ofthe band sections, a C clamp hingedly connected at one end to oneof the band'sections and swingable into and out of bridging relationwith said last named flanges, and means carried at the other end of theCclamp and engaging an adjacent flange of'the band to clamp the flangesof the band to the flanges of the mold members, said flanges on the freeends of the band section clamping therebetween the flanges at the othersides of the mold sections.

2. The construction of claim 1 wherein said means comprises a clampingscrew at the free end of the C- clampv and engaging an adjacent flangeof the band.

3. The construction of claim 1" wherein said means comprises a cam leverpivoted to the free end of the G- clamp and'havinga cam' head engagingan adjacent" flange of the band, and a slop lug on said last namedflange and engaged by the cam head to limit swinging movement of thelever inwardly toward the band in clamping position.

References Cited in the file of this patent UNITED STATES PATENTS362,123 Adams Aug. 6, 1907 1,201,613 Novy Oct. 17, 1916 1,282,200 DesLauriers- Oct. 22, 1918 1,291,781 Des Lauriers Jan. 21, 1919 1,374,063Corbett Apr. 5, 1921 1,443,459 Carty Jan. 30, 1923 1,445,907 Novy Feb.20, 1923 2,093,346 Badt Sept. 14, 1937 FOREIGN PATENTS 659,935 FianceJuly 4, 1929

